Although Technicolor employs comprehensive quality control measures, in this instance the issue was not detected prior to replication.

ENGADGET: Saving Private Ryan Blu-ray discs recalled due to audio glitch

Although developing new diagnostic techniques is cheap compared with developing new drugs (largely because they do not have to undergo such comprehensive and expensive clinical trials), it is frequently not cheap enough to create tests that will be commercially viable if their only market is in the poor world.

ECONOMIST: A poor diagnosis